question hbase Master failed to become active master in Support Questions

question hbase Master failed to become active master in Support Questions https://community.cloudera.com/t5/Support-Questions/hbase-Master-failed-to-become-active-master/m-p/58933#M55098 My primary master died due to scheduled maintenance and my backup master failed to kick in CM Agent has tried to start it up but could not initialize the namespace table After several manual efforts where I followed <A href="https://community.cloudera.com/t5/Storage-Random-Access-HDFS/HBase-Master-Failed-to-become-active-master/m-p/27186#M1225" target="_blank">https://community.cloudera.com/t5/Storage-Random-Access-HDFS/HBase-Master-Failed-to-become-active-master/m-p/27186#M1225</A> I did the following only <PRE>rmr /hbase/meta-region-server rmr /hbase/rs rmr /hbase/splitWAL rmr /hbase/backup-masters rmr /hbase/table-lock rmr /hbase/flush-table-proc rmr /hbase/region-in-transition rmr /hbase/running rmr /hbase/balancer rmr /hbase/recovering-regions rmr /hbase/draining rmr /hbase/namespace rmr /hbase/hbaseid rmr /hbase/table</PRE>I got the a master to come up after setting hbase.master.namespace.init.timeout to some absurd valueI see the master registering dead region servers (though I cannot find where it pick them up, not in the WAL, Archive or data)and I see the master registering the following Starting namespace manager (since 1hrs, 20mins, 5sec ago)even though cloudera manager shows healthy list the catalog in hbase shell gives me the following error <PRE>hbase(main):004:0> list TABLE ERROR: org.apache.hadoop.hbase.PleaseHoldException: Master is initializing at org.apache.hadoop.hbase.master.HMaster.checkInitialized(HMaster.java:2373) at org.apache.hadoop.hbase.master.MasterRpcServices.getTableNames(MasterRpcServices.java:907) at org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:55650) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2182) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:112) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:185) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:165)</PRE>fsck /hbase -files -blocks shows healthyhbck  shows zero inconsistencies I am on version Hadoop 2.6.0+cdh5.11.1+2400 HBase 1.2.0+cdh5.11.1+319I did have a master colocated with a region server and was wondering if I ran into this<A href="https://issues.apache.org/jira/browse/HBASE-14861" target="_blank">https://issues.apache.org/jira/browse/HBASE-14861</A>and then this <A href="https://issues.apache.org/jira/browse/HBASE-14664" target="_blank">https://issues.apache.org/jira/browse/HBASE-14664</A>as the cause of the failed backup kicking in  But I cannot determine why I am getting namespace manager would take so long to initialize  Fri, 16 Sep 2022 12:06:12 GMT scratch28 2022-09-16T12:06:12Z